I've slowly been going through "J Tutorial and Statistical Package", which teaches J (Iverson's evolution of APL which uses only ASCII characters) in the contex

I've slowly been going through "J Tutorial and Statistical Package", which teaches J (Iverson's evolution of APL which uses only ASCII characters) in the context of building a library for statistics[1]. I've found that it's a great way to learn the language, and that stats is a domain where APL languages work very well. I also read an interesting paper about using APL to create a notation for statistics, such as "normal prob between 0 2"[2]. Another nice thing about J is that it's GPL'd and free to use commercially. [1] https://webdocs.cs.ualberta.ca/~smillie/Jpage/jtsp.pdf https://webdocs.cs.ualberta.ca/~smillie/Jpage/jtsp.pdf [2] http://archive.vector.org.uk/art10501700 http://archive.vector.org.uk/art10501700